gcc/testsuite/gcc.dg/Wparentheses-13.c

   1 /* PR c/70436  */
   2 /* { dg-options "-Wparentheses" }  */
   3
   4 int a, b, c;
   5 void bar (int);
   6
   7 void
   8 foo (void)
   9 {
  10   if (a) /* { dg-warning "ambiguous" }  */
  11     if (b)
  12       {
  13         if (c)
  14           bar (0);
  15       }
  16     else
  17       bar (1);
  18
  19   if (a > 0)
  20     if (a > 1)
  21       if (a > 2)
  22         if (a > 3)
  23           if (a > 4)
  24             if (a > 5) /* { dg-warning "ambiguous" }  */
  25               if (a > 6)
  26                 while (1)
  27                   bar (0);
  28   else
  29     bar (1);
  30
  31   if (a) /* { dg-warning "ambiguous" }  */
  32     if (b)
  33       switch (c);
  34     else
  35       bar (1);
  36
  37   switch (a)
  38   {
  39   default:
  40     if (b) /* { dg-warning "ambiguous" }  */
  41       if (c)
  42         for (;;)
  43           bar (0);
  44     else
  45       bar (1);
  46   }
  47
  48   if (a) /* { dg-warning "ambiguous" }  */
  49   if (a)
  50     {
  51       bar (2);
  52     }
  53   else
  54     bar (3);
  55
  56   if (a)
  57     do if (b) bar (4); while (1);
  58   else bar (5);
  59
  60   do
  61     {
  62       if (a)
  63         if (b) /* { dg-warning "ambiguous" }  */
  64          if (c) for (;;) bar (6);
  65      else bar (7);
  66     } while (0);
  67 }